Quantum Computing

Quantum computing is the study of how to use phenomena in quantum physics to create new ways of computing.

Quantum Computing

In the 1980s, the area of quantum computing first emerged. The use of quantum algorithms over their conventional equivalents led to the discovery that some computing issues might be solved more effectively.

What Is Quantum Computing?

The field of computing known as quantum computing is devoted to creating computer technology that is based on the ideas of quantum theory (which explains the behaviour of energy and matter at the atomic and subatomic levels). Today's computers are limited in their ability since they can only encode information in bits with a value of 1 or 0.

Key Takeaways

  • The qubit is used in quantum computing. As qubits are added, quantum computing capability increases exponentially.
  • A qubit can be either of those values or a superposition of both 0 and 1, unlike a typical computer bit, which can only be either 0 or 1.
  • Adding extra transistors to a classical computer only increases power linearly; this is not the case here.

Understanding Quantum Computing

These supercomputers are based on two aspects of quantum physics: superposition and entanglement. This makes it possible for quantum computers to handle tasks at rates that are both far faster than those of ordinary computers and consume substantially less energy.

The domains of finance, military affairs and intelligence, drug development, aircraft design, utilities (nuclear fusion), polymer design, machine learning and artificial intelligence (AI), big data search, and digital manufacturing might all benefit tremendously from quantum computing.

Some of the most well-known technology companies, like IBM, Microsoft, Google, D-Waves Systems, Alibaba, Nokia, Intel, Airbus, HP, Toshiba, Mitsubishi, SK Telecom, NEC, Raytheon, Lockheed Martin, Rigetti, Biogen, Volkswagen, and Amgen, have chosen to work in the field of quantum computing due to its potential and anticipated market size. By 2025, 40% of multinational corporations want to launch activities related to quantum computing.

Classical versus quantum computers

Information is processed differently on quantum computers. Transistors, which are either 1 or 0, are used in conventional computers. Qubits, which may simultaneously be 1 or 0, are used in quantum computers. The quantum computer's capacity exponentially grows with the number of connected qubits. The power is only increased linearly when more transistors are connected together.

For routine chores that need to be accomplished by a computer, traditional computers work best. Quantum computers, on the other hand, are excellent for doing simulations and data analytics, such as for chemical or pharmaceutical trials. However, these computers need to be kept at absolute zero degrees. Additionally, they are more expensive and more challenging to construct.

Memory expansion is a traditional method of accelerating computers. Quantum computers, meanwhile, assist in resolving more challenging issues. Quantum computers can solve complicated problems more quickly, even though they might not perform better or quicker than Microsoft Word.

For example, Google's next quantum computer might aid in a variety of tasks, such as accelerating the construction of more energy-efficient batteries or accelerating the training of machine learning algorithms.

Quantum computing has a number of other applications, including 

  • Share information securely. 
  • Different health issues, including cancer and the creation of new medications,
  • Radars' capacity to identify objects like missiles and aeroplanes can be enhanced with the use of quantum computers.
  • Using quantum computers to maintain the water clean with chemical sensors is another field, as is the environment.
  • In 2019, Google demonstrated that a quantum computer can answer a problem in a matter of minutes as opposed to 10,000 years for a traditional computer.

An Example of a Quantum Computer in the Real World

The construction of a quantum computer by Google (GOOG) by 2029 will cost billions of dollars. In order to do this, the business established the Google AI campus in California. For years, Google has made investments in this technology. Additionally, other businesses, such as International Business Machines and Honeywell International (HON), have done the same (IBM). In the upcoming years, IBM anticipates reaching significant quantum computing milestones.